From 7e92b4fc345f5b6f57585fbe5ffdb0f24d7c9b26 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Tue, 8 May 2007 00:36:07 -0700 Subject: x86, serial: convert legacy COM ports to platform devices Make x86 COM ports into platform devices and don't probe for them if we have PNP. This prevents double discovery, where a device was found both by the legacy probe and by 8250_pnp, e.g., serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A 00:02: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A This also means IRDA devices without a UART PNP ID will no longer be claimed by the serial driver, which might require changes in IRDA drivers and administration. In addition to this patch, you may need to configure a setserial init script, e.g., /etc/init.d/setserial, so it doesn't poke legacy UART stuff back in. On Debian, "dpkg-reconfigure setserial" with the "kernel" option does this. To force the old legacy probe behavior even when we have PNPBIOS or ACPI, load the new legacy_serial module (or build 8250 static) with the "legacy_serial.force" option. [akpm@linux-foundation.org: fix makefiles] Signed-off-by: Bjorn Helgaas Cc: Keith Owens Cc: Len Brown Cc: Adam Belay Cc: Matthieu CASTET Cc: Jean Tourrilhes Cc: Matthew Garrett Cc: Ville Syrjala Cc: Russell King Cc: Samuel Ortiz Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-i386/serial.h | 16 ---------------- 1 file changed, 16 deletions(-) (limited to 'include/asm-i386') diff --git a/include/asm-i386/serial.h b/include/asm-i386/serial.h index bd67480ca10..57a4306cdf6 100644 --- a/include/asm-i386/serial.h +++ b/include/asm-i386/serial.h @@ -11,19 +11,3 @@ * megabits/second; but this requires the faster clock. */ #define BASE_BAUD ( 1843200 / 16 ) - -/* Standard COM flags (except for COM4, because of the 8514 problem) */ -#ifdef CONFIG_SERIAL_DETECT_IRQ -#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ) -#define STD_COM4_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_AUTO_IRQ) -#else -#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST) -#define STD_COM4_FLAGS ASYNC_BOOT_AUTOCONF -#endif - -#define SERIAL_PORT_DFNS \ - /* UART CLK PORT IRQ FLAGS */ \ - { 0, BASE_BAUD, 0x3F8, 4, STD_COM_FLAGS }, /* ttyS0 */ \ - { 0, BASE_BAUD, 0x2F8, 3, STD_COM_FLAGS }, /* ttyS1 */ \ - { 0, BASE_BAUD, 0x3E8, 4, STD_COM_FLAGS }, /* ttyS2 */ \ - { 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS }, /* ttyS3 */ -- cgit v1.2.3